Physical Properties

Normal Butane

Formula: C4H10

Molecular Weight: 58.123

Vapor Pressure @ 70° F(psig): 16.9

Vapor Pressure @ 100° F(psig): 37.5

Boiling Point @ 1 ATM., °F: 31.1

Freezing Point @ 1 ATM., °F: -217.0

Autoignition Temperature °F: 761

Specific Gravity Liquid @ 60 °F: 0.584

Specific Gravity Gas @ 60 °F: 2.006

Density of Liquid lbs./gal. @ 60 °F: 4.864

Vol. of Vapor/lb. @ 60 °F (cu.ft.): 6.54

Vol. of Vapor/gal. @ 60 °F (cu.ft.): 31.75

Gas Vol./Liq Vol. @ 1 ATM. & 60 °F: 237.8

Critical Temperature °F: 305.6

Critical Pressure (psia): 550.6

Flash Point °F: -101

Specific Heat of Gas, Cp @ 60 °F, BTU/lb. °F: 0.395

Specific Heat of Liquid, Cp @ 60 °F: 0.570

Heat of Vaporization, BTU/lb. °F: 165.8

Net Heat of Combustion of Liquid @ 77 °F (BTU/lb.): 19,657

Chemical Heat of Combustion (kJ/g): 43.3

Viscosity of Liquid, centipoise @ 100 °F: 0.258

Coefficient of Liquid Expansion @ 60 °F: 0.0011

Solubility in Water @ 70 °F (% by weight): 0.008

Solubility of Water @ 70 °F (% by weight): 0.007

Surface Tension @ 77 °F (dynes/cm): 11.9

Kauri-Butanol Value: 20

Flammability Limits in Air: 1.9 – 8.5

Isobutane

Formula: C4H10

Molecular Weight: 58.123

Vapor Pressure @ 70° F(psig): 31.1

Vapor Pressure @ 100° F(psig): 59.0

Boiling Point @ 1 ATM., °F: 10.9

Freezing Point @ 1 ATM., °F: -255.3

Autoignition Temperature °F: 1010

Specific Gravity Liquid @ 60 °F: 0.563

Specific Gravity Gas @ 60 °F: 2.006

Density of Liquid lbs./gal. @ 60 °F: 4.699

Vol. of Vapor/lb. @ 60 °F (cu.ft.): 6.53

Vol. of Vapor/gal. @ 60 °F (cu.ft.): 30.59

Gas Vol./Liq Vol. @ 1 ATM. & 60 °F: 229.3

Critical Temperature °F: 274.5

Critical Pressure (psia): 527.9

Flash Point °F: -117

Specific Heat of Gas, Cp @ 60 °F, BTU/lb. °F: 0.387

Specific Heat of Liquid, Cp @ 60 °F: 0.570

Heat of Vaporization, BTU/lb. °F: 157.2

Net Heat of Combustion of Liquid @ 77 °F (BTU/lb.): 19,589

Chemical Heat of Combustion (kJ/g): 42.8

Viscosity of Liquid, centipoise @ 100 °F: 0.277

Coefficient of Liquid Expansion @ 60 °F: 0.0012

Solubility in Water @ 70 °F (% by weight): 0.008

Solubility of Water @ 70 °F (% by weight): 0.008

Surface Tension @ 77 °F (dynes/cm): 9.8

Kauri-Butanol Value: 18

Flammability Limits in Air: 1.8 – 8.4

Propane

Formula: C3H8

Molecular Weight: 44.096

Vapor Pressure @ 70° F(psig): 109.3

Vapor Pressure @ 100° F(psig): 172.0

Boiling Point @ 1 ATM., °F: -43.7

Freezing Point @ 1 ATM., °F: -305.7

Autoignition Temperature °F: 842

Specific Gravity Liquid @ 60 °F: 0.508

Specific Gravity Gas @ 60 °F: 1.522

Density of Liquid lbs./gal. @ 60 °F: 4.234

Vol. of Vapor/lb. @ 60 °F (cu.ft.): 8.62

Vol. of Vapor/gal. @ 60 °F (cu.ft.): 36.35

Gas Vol./Liq Vol. @ 1 ATM. & 60 °F: 272.7

Critical Temperature °F: 206.1

Critical Pressure (psia): 616

Flash Point °F: -156

Specific Heat of Gas, Cp @ 60 °F, BTU/lb. °F: 0.389

Specific Heat of Liquid, Cp @ 60 °F: 0.620

Heat of Vaporization, BTU/lb. °F: 183.0

Net Heat of Combustion of Liquid @ 77 °F (BTU/lb.): 19,918

Chemical Heat of Combustion (kJ/g): 44.0

Viscosity of Liquid, centipoise @ 100 °F: 0.186

Coefficient of Liquid Expansion @ 60 °F: 0.0016

Solubility in Water @ 70 °F (% by weight): 0.007

Solubility of Water @ 70 °F (% by weight): 0.016

Surface Tension @ 77 °F (dynes/cm): 7.0

Kauri-Butanol Value: 15

Flammability Limits in Air: 2.2 – 9.5

Isopentane

Formula: C5H12

Molecular Weight: 72.15

Vapor Pressure @ 70° F(psig): -3.1

Vapor Pressure @ 100° F(psig): 5.8

Boiling Point @ 1 ATM., °F: 82

Freezing Point @ 1 ATM., °F: -255.8

Autoignition Temperature °F: -

Specific Gravity Liquid @ 60 °F: 0.624

Specific Gravity Gas @ 60 °F: 2.491

Density of Liquid lbs./gal. @ 60 °F: 5.200

Vol. of Vapor/lb. @ 60 °F (cu.ft.): 5.27

Vol. of Vapor/gal. @ 60 °F (cu.ft.): 27.40

Gas Vol./Liq Vol. @ 1 ATM. & 60 °F: 205.0

Critical Temperature °F: 369.1

Critical Pressure (psia): 490.4

Flash Point °F: -60

Specific Heat of Gas, Cp @ 60 °F, BTU/lb. °F: 0.384

Specific Heat of Liquid, Cp @ 60 °F: 0.538

Heat of Vaporization, BTU/lb. °F: 147.1

Net Heat of Combustion of Liquid @ 77 °F (BTU/lb.): 19,304

Chemical Heat of Combustion (kJ/g): 41.9

Viscosity of Liquid, centipoise @ 100 °F: 0.317

Coefficient of Liquid Expansion @ 60 °F: 0.0009

Solubility in Water @ 70 °F (% by weight): Neg.

Solubility of Water @ 70 °F (% by weight): 0.01

Surface Tension @ 77 °F (dynes/cm): 14.5

Kauri-Butanol Value: N/A

Flammability Limits in Air: 1.4 – 7.6

Normal Pentane

Formula: C5H12

Molecular Weight: 72.15

Vapor Pressure @ 70° F(psig): -6.2

Vapor Pressure @ 100° F(psig): 0.8

Boiling Point @ 1 ATM., °F: 97

Freezing Point @ 1 ATM., °F: -201.5

Autoignition Temperature °F: 588

Specific Gravity Liquid @ 60 °F: 0.630

Specific Gravity Gas @ 60 °F: 2.491

Density of Liquid lbs./gal. @ 60 °F: 5.255

Vol. of Vapor/lb. @ 60 °F (cu.ft.): 5.27

Vol. of Vapor/gal. @ 60 °F (cu.ft.): 27.68

Gas Vol./Liq Vol. @ 1 ATM. & 60 °F: 207.0

Critical Temperature °F: 385.8

Critical Pressure (psia): 488.8

Flash Point °F: -40

Specific Heat of Gas, Cp @ 60 °F, BTU/lb. °F: 0.388

Specific Heat of Liquid, Cp @ 60 °F: 0.544

Heat of Vaporization, BTU/lb. °F: 153.6

Net Heat of Combustion of Liquid @ 77 °F (BTU/lb.): 19,495

Chemical Heat of Combustion (kJ/g): 42.5

Viscosity of Liquid, centipoise @ 100 °F: 0.340

Coefficient of Liquid Expansion @ 60 °F: 0.0009

Solubility in Water @ 70 °F (% by weight): Neg.

Solubility of Water @ 70 °F (% by weight): 0.009

Surface Tension @ 77 °F (dynes/cm): 15.5

Kauri-Butanol Value: N/A

Flammability Limits in Air: 1.4 – 7.8

DME

Formula: CH3-0-CH3

Molecular Weight: 46.069

Vapor Pressure @ 70° F(psig): 61.3

Vapor Pressure @ 100° F(psig): 106.0

Boiling Point @ 1 ATM., °F: -12.7

Freezing Point @ 1 ATM., °F: -223

Autoignition Temperature °F: 662

Specific Gravity Liquid @ 60 °F: 0.671

Specific Gravity Gas @ 60 °F: 1.590

Density of Liquid lbs./gal. @ 60 °F: 5.579

Vol. of Vapor/lb. @ 60 °F (cu.ft.): 8.24

Vol. of Vapor/gal. @ 60 °F (cu.ft.): 46.12

Gas Vol./Liq Vol. @ 1 ATM. & 60 °F: 345.0

Critical Temperature °F: 260.3

Critical Pressure (psia): 778.9

Flash Point °F: -42

Specific Heat of Gas, Cp @ 60 °F, BTU/lb. °F: 0.335

Specific Heat of Liquid, Cp @ 60 °F: N/A

Heat of Vaporization, BTU/lb. °F: 201.0

Net Heat of Combustion of Liquid @ 77 °F (BTU/lb.): 12,397

Chemical Heat of Combustion (kJ/g): 26.5

Viscosity of Liquid, centipoise @ 100 °F: N/A

Coefficient of Liquid Expansion @ 60 °F: 0.0012

Solubility in Water @ 70 °F (% by weight): 35.0

Solubility of Water @ 70 °F (% by weight): 6.9

Surface Tension @ 77 °F (dynes/cm): 11.4

Kauri-Butanol Value: 60

Flammability Limits in Air: 3.3 – 18.0

152A

Formula: CH3-CHF2

Molecular Weight: 66.051

Vapor Pressure @ 70° F(psig): 63.9

Vapor Pressure @ 100° F(psig): 111.1

Boiling Point @ 1 ATM., °F: -13

Freezing Point @ 1 ATM., °F: -179

Autoignition Temperature °F: 849

Specific Gravity Liquid @ 60 °F: 0.922

Specific Gravity Gas @ 60 °F: 2.280

Density of Liquid lbs./gal. @ 60 °F: 7.696

Vol. of Vapor/lb. @ 60 °F (cu.ft.): 5.74

Vol. of Vapor/gal. @ 60 °F (cu.ft.): 44.20

Gas Vol./Liq Vol. @ 1 ATM. & 60 °F: 330.6

Critical Temperature °F: 236.2

Critical Pressure (psia): 652.5

Flash Point °F: -58

Specific Heat of Gas, Cp @ 60 °F, BTU/lb. °F: 0.240

Specific Heat of Liquid, Cp @ 60 °F: 0.378

Heat of Vaporization, BTU/lb. °F: 140.9

Net Heat of Combustion of Liquid @ 77 °F (BTU/lb.): 4,937

Chemical Heat of Combustion (kJ/g): 6.3

Viscosity of Liquid, centipoise @ 100 °F: 0.247

Coefficient of Liquid Expansion @ 60 °F: 0.0014

Solubility in Water @ 70 °F (% by weight): 1.7

Solubility of Water @ 70 °F (% by weight): 0.17

Surface Tension @ 77 °F (dynes/cm): 10.0

Kauri-Butanol Value: 11

Flammability Limits in Air: 3.9 – 16.9

134A

Formula: CF3-CFH2

Molecular Weight: 102.03

Vapor Pressure @ 70° F(psig): 71.0

Vapor Pressure @ 100° F(psig): 124.2

Boiling Point @ 1 ATM., °F: -15.5

Freezing Point @ 1 ATM., °F: -149.8

Autoignition Temperature °F: -

Specific Gravity Liquid @ 60 °F: 1.245

Specific Gravity Gas @ 60 °F: 3.523

Density of Liquid lbs./gal. @ 60 °F: 10.384

Vol. of Vapor/lb. @ 60 °F (cu.ft.): 3.72

Vol. of Vapor/gal. @ 60 °F (cu.ft.): 38.64

Gas Vol./Liq Vol. @ 1 ATM. & 60 °F: 289.0

Critical Temperature °F: 213.9

Critical Pressure (psia): 587.4

Flash Point °F: Non Flammable

Specific Heat of Gas, Cp @ 60 °F, BTU/lb. °F: 0.282

Specific Heat of Liquid, Cp @ 60 °F: 0.331

Heat of Vaporization, BTU/lb. °F: 93.4

Net Heat of Combustion of Liquid @ 77 °F (BTU/lb.): 0

Chemical Heat of Combustion (kJ/g): 0

Viscosity of Liquid, centipoise @ 100 °F: 0.182

Coefficient of Liquid Expansion @ 60 °F: 0.0016